4. On a national test of "mental intensity," u is 20 and the standard deviation 6.28. Students in your class produce the following scores: 25, 26, 34, 14, 33, 29, 22, 18, 16, 13, 21, 20, 22, 21, 34, 30 Using the criterion of 0.05 and both tails of the sampling distribution, determine if your class is representative of the population. a. State the null and alternative hypotheses. b. Using an alpha = 0.05, what is t (crit)? c. Using SPSS, calculate t (obt) (Use One Sample t test to get this info) d. What should you conclude? E Focus

MATLAB: An Introduction with Applications
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4. On a national test of "mental intensity," u is 20 and the standard deviation 6.28. Students in
your class produce the following scores:
25, 26, 34, 14, 33, 29, 22, 18, 16, 13, 21, 20, 22, 21, 34, 30
Using the criterion of 0.05 and both tails of the sampling distribution, determine if
your class is representative of the population.
a. State the null and alternative hypotheses.
b. Using an alpha = 0.05, what is t (crit)?
c. Using SPSS, calculate t (obt) (Use One Sample t test to get this info)
d. What should you conclude?
ates)
E Focus
Transcribed Image Text:4. On a national test of "mental intensity," u is 20 and the standard deviation 6.28. Students in your class produce the following scores: 25, 26, 34, 14, 33, 29, 22, 18, 16, 13, 21, 20, 22, 21, 34, 30 Using the criterion of 0.05 and both tails of the sampling distribution, determine if your class is representative of the population. a. State the null and alternative hypotheses. b. Using an alpha = 0.05, what is t (crit)? c. Using SPSS, calculate t (obt) (Use One Sample t test to get this info) d. What should you conclude? ates) E Focus
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